"Lazy" makes no sense here. They completely redesigned the character in a way that's never been done in 75 years.
It's not like a metal style is some comic book villain hallmark. Who else besides Vanko in Iron Man 2? And in that case, it made sense as an opposite of Tony and to give personality to a comic character that had zero defining personality traits.
Seriously, what are these scores of movies with similar "creepy edgy villains" that have rock/metal looks? How is this lazy in any definition of the word? You can say you hate it and have merit, but to call it "lazy" is hilarious.